U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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ZIP Code Details for Eton

Detailed geographic and postal record lookup for the city of Eton.

Postal Information

ZIP Code 77516
Type Po Box
Primary City Angleton
State TX
County Brazoria County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 979
Latitude 29,16° N
Longitude -95,42° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Angleton, TX

Postal Information

ZIP Code 80120
Type Standard
Primary City Littleton
State CO
County Arapahoe County
Acceptable Cities -
Unacceptable -
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,59° N
Longitude -105,01° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

Postal Information

ZIP Code 80121
Type Standard
Primary City Littleton
State CO
County Arapahoe County
Acceptable Cities Centennial, Cherry Hills Village, Cherry Hl Vlg, Greenwood Village, Greenwood Vlg
Unacceptable Cherry Hills, Grants Ranch
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,61° N
Longitude -104,95° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

Postal Information

ZIP Code 80122
Type Standard
Primary City Littleton
State CO
County Arapahoe County
Acceptable Cities Centennial
Unacceptable -
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,58° N
Longitude -104,95° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

Postal Information

ZIP Code 80123
Type Standard
Primary City Littleton
State CO
County Jefferson County
Acceptable Cities Bow Mar, Columbine Valley, Columbine Vly, Denver, Lakewood
Unacceptable Grants Ranch
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,62° N
Longitude -105,07° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

Postal Information

ZIP Code 80125
Type Standard
Primary City Littleton
State CO
County Douglas County
Acceptable Cities Roxborough
Unacceptable -
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,49° N
Longitude -105,05° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

Postal Information

ZIP Code 80126
Type Standard
Primary City Littleton
State CO
County Douglas County
Acceptable Cities Hghlnds Ranch, Highlands Ranch
Unacceptable -
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,54° N
Longitude -104,96° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

Postal Information

ZIP Code 80127
Type Standard
Primary City Littleton
State CO
County Jefferson County
Acceptable Cities Denver
Unacceptable -
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,57° N
Longitude -105,14° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

Postal Information

ZIP Code 80128
Type Standard
Primary City Littleton
State CO
County Jefferson County
Acceptable Cities -
Unacceptable -
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,56° N
Longitude -105,08° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

Postal Information

ZIP Code 80129
Type Standard
Primary City Littleton
State CO
County Douglas County
Acceptable Cities Hghlnds Ranch, Highlands Ranch
Unacceptable -
Time Zone America/Denver
Area Codes 303, 720, 983
Latitude 39,54° N
Longitude -105° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Littleton, CO

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Postal context

About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.